How could anyone possibly think that something as significant as this token deserve to be put back in the ground? I find that whole concept to be absurd. We are talking about history here and, although it may not be a pleasant reminder, it is something that has to be preserved for posterity and as a reminder of how painfully wrong some facets of history happen to be. Maybe this could prevent anything similar in the future! To place this token back in the ground would be tantamount to closing your eyes to its' former (and present, regretfully) existence!
Take off your rose colored glasses, dude......the Holocaust, the disgusting treatment of American Indians, all forms of racial/religious/political/etc. prejudice and so much more, is real. It was real in 1922, it was real 2012 years ago, it is real today and it will be real tomorrow. Only through knowledge and understanding (not by closing your eyes and mind) does this world have any chance of existing in harmony.